Improved chair



waited giedre gaat anni.

Letters Patent No. 96,548, (lated November 9, `1869.

IMPROVED CHAIR The Schedule referredto in. these Letters Patent and making part of the same.

To all to whom these presents shall come to the accompanying drawings, making part ofthis specification, andin which- Figure 1 is aside, and

Figure 2, a front elevation of a chair containing my invention or improvement. i

The invention herein described-is not intended. in any senseas a spring-seat chair, but rather as a tilting reclining or rocking-seat chair, and is intended, to a great extent,.for use in business oflices, public build-4 ings, 85e., rather than the parlor and sick-room, though it possesses features which might render it desirable in any locality.

'lhe invention consists in pivoting the seat of the chair at each side to its legs by inelastic `joints, and in combining with such seat and foundation, when so connected, an elastic spring, for enabling the seat to be tilted backward into auinclined position, or rocked to and fro in one direction, by which means the monotouy of an unchanging position is relieved, and the ease ofthe sitter enhanced to a considerable extent.

The drawings, which accompany this specitication, representa chair at A as composed of au armed seat,

' a, and a foundation of four legs, b b b b, made in the usual manner of many office-chairs now in use, with the exception of the mode of inverting Ythe seat and legs. l

ln carrying ont my invention, I mount the seat by pivoting it at opposite sides to the arms ce, of acurved bar, e, such bar being in turn mounted upon or fixed tothe upper end of an upright screugll, which passes downward through the support or foundation of the seat,y as represented.

In pursuance of my invention, I secure centrally to the curved bara, and at right angles to its longest axis, a second curved bar, f, the front extremity g ot this latter bar serving as a support to the front of the seat when in or about in a horizontal position, and the rear extremity or horn h of such bar serving as a rest or stop to determine the extent of rearward inclinationof such seat.

A loop-spring, t, of India rubber, or a suitable spring of other character or material is to be attached to the chair-seat, and to the extremity g of the bar f, in order to insure the contact of the two, and consequently retain the seat in a horizontal position, except when compelled to an inclined position by the occupant.

The .spring t' should be of such tenacity or power as to form an easy and yielding, though durable lconnec tion between the seata'nd its support; the result will be a chair of great comfort.

I am aware that a chair has been heretofore made by attaching the seat to the foundation or legs by interposed coiled springs placed upon two opposite sides of the same.

This power .produces too uncertain and unsteady a seat, and is subject, in many instances, to breakage or derangement.

It will be apparent to the reader that my invention obviates these defecten What I claim, and desire to secure by Letters Patent is 'he combination of the chair-seat with thc curved bar e to which it is hinged, the bar f, Awhich serves as a support and stop for the seat in its horizontal and inclined positions, -and the spring t, connected with the front of the bar f and seat as specified, said parts being constructed andv arranged as shown (and set forth.-

'JEFFERSON CHASE.

Vitnesses FRED. CURTIS, EDWARD GRIFFITH. 

